Alcatel Speed Touch Wireless, User Manual

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11 Networking Services - IP
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3EC 17766 AAAA TCZZA Ed. 01
One of the STWireless features is that it can automatically revert
from DHCP client to DHCP server.
At boot time the
STWireless probes the (W)LAN for a specified
time limit ( 'Client timeout' ) to check wether another DHCP server is
available on the network. If so, it will act as a DHCP client. If no
response is received within the specified time, the STWireless
becomes a DHCP server.
To allow the
STWireless to act as Auto DHCP client/server, tick
on the 'DHCP' webpage.
Additionally, you can configure the ' Client timeout' in seconds.
Via the ' DHCP server configuration' webpage, you can configure
the STWireless DHCP server settings. See subsection 11.3.4 for
more information.
OSs supporting 'Automatic IP Addressing ', might initially not
establish IP connectivity with the STWireless . This is because the IP
address they assimilated is not within the STWireless 'Auto DHCP'
server range.
To prevent this problem, please power on your (W)LAN
devices after the STWireless has come online .
Indeed, when the STWireless is in 'Auto DHCP', it will first
operate as a DHCP client. After the client timeout exceeded, it
switches to DHCP server mode, but this might be to late as some
clients will already selected an automatic IP address.
Dynamic IP addressing is a feature allowing DHCP clients to
assign themselves an IP address.
This happens when there is no DHCP server on the network, or
when the server is temporarily down. After automatic assignment,
the DHCP client will issue DHCP requests at regular instances.
If the DHCP server is back online, the client will now lease an IP
address from the server, after discarding its temporary automatic
IP address.